Door construction for heaters



y I E. P. BAKER 2,241,574

DOOR GONSTRUCTION EOR HEATERS Original Filed Ocit. 6, 1954 2Sheets-Sheet 1 Baker i6 Earl P.

May 13, 1941. v p, BAKER 2,241,574

DOOR CONSTRUCTION FOR HEATERS Original Filed Oct. 6, 1934 2 Sheets-Sheet2 Fig-5 Fig.4 44 ;1 1 14 4 E g 15 r 15 4i EH I I l-: 2 u A I 2.8 59 45452,6 I 40 I 58 2.0 4 55 41- 5 24 12 55 22 1 2'7 Ii 5 2a v Z I, O

. il ij W 46 i awe/WM Earl P Bker Patented May 13, 1941 UNTTED STATESPATENT OFFEQE Original application October 6, 1934, Serial No., 747,180.Divided and this application Septemher 9, 1938, Serial No. 229,114

6 Claims. (c1. 110-181) This application is a division of my applicationfor patent for Door construction for heating boilers filed Oct. 6, 1934bearing Ser. 747,180 and which eventuated into Patent No. 2,132,507dated Oct, 11, 1938.

My invention relates to heating boilers and particularly to the firedoor and doorway construction therein.

In the usual small heater or boiler for homes and other establishmentsrequiring heating plants of relatively smallcapacity, no special attempthas been made to provide a construction in connection with which theconventional fuel burning equipment may be conveniently and effectivelyincorporated. As a result, considerable difliculty is encountered in theinitial installation of such equipment and in the subsequent inspectionand repair thereof.

An object of my invention is to provide a simple and practicalconstruction in heating boilers adapted to facilitate the initialinstallation in such boilers of fuel burning equipment and to providefor subsequent convenient accessibility to the installed equipment.

With the foregoing and other objects in view, which will appear in thefollowing description, the invention resides in the novel combinationand arrangement of parts and in the details of construction hereinafterdescribed and claimed.

In the drawings, Fig. 1 is a fragmentary elevational view, inperspective, illustrating a form of my improved boiler construction;Fig. 2 is a perspective sectional view further illustrating the boilerconstruction shown in Fig. 1, the fire door and the ledge or lowermember of the door casing being removed, as in practice, to admit of theready installation of fuel burning apparatus; Fig. 3 is a perspectiveview in detail of the casing ledge; Fig. 4 is a vertical centralsectional view of the structure shown in Fig. 1, and Fig. 5 is avertical central sectional view of the structure ,shown in Fig. 2.

In the drawings, the boiler structure, fragmentarily shown, includeswater-jacket plates 10, ll surrounding a combustion chamber l2.Sheathing the outer plates ll of the water-jacket is a covering l3 ofinsulating material, the same being encased in a jacket made up ofpanels l4 and corner strips l5.

Supporting the boiler proper is a channel iron base IS, the flanges l1,l8 thereof projecting inwardly from the upright web l9, the upper flangell providing a rest upon which theboiler proper stands and the lowerflange I8 providing a footing adapted to bear upon the floor.

At the front of the boiler structure, is a doorway which consists ofcommunicating openings in the boiler proper and in thebase it. Theopening in the boiler proper is provided with a door casing including aplate-like header 20 and plate-like stiles 2| which bridge the spacebetween the inner andouter plates H], II of the water-jacket, saidheader 2!! and stiles 2i having marginal portions projecting outwardlybeyond the jacket panel M at the front of the boiler. Intermediate theupper and lower extremities of the casing stiles 2| are u shaped guides,one thereof, indicated by the numeral 22, being clearly shown in Fig. 2.'These guides 22, horizontally disposed, open toward the front of thedoor casing and are adapted to receive the ends of a separate ledgeplate 23. The front edges of the stiles 2!, at the upper portionsthereof, are inclined, as shown, said edges together with the front edgeof the header 2i) lying in a plane sloping forwardly and downwardly fromsaid header. This plane also includes the front edge of the ledge plate23 applied to the guides 22 and wherein the rear edge of the plate abutsagainst limit stops 24.

A'self-jclosing,removable fire door 25 is provided for the door casingwhich, as will now be understood, consists of the header 2%, stiles 2iand ledge plate 23. This fire door is constructed with a frame 26angular in cross-section, said frame having a face flange 21' and aperimetrical flange 28 adapted to encompass the forwardly extendingmarginal portion of the door casing. Within the frame 26 of the door isa face plate 29, the same being welded at its edges, as at 38, to theinner face'of the face flange 21 of said frame. Lying against the innerface of said plate 29 is a panel 3| of asbestos or other suitable heatinsulating materialand lying against said panel 3| is a back plate 32.Themargin 0f the panel 3| over-reaches andseats against the outer edgeof the header 2B, the inclined edges of the stiles 2i and the outer edgeof the ledge plate 23 in the closed position of the door 25. The backplate 32 being smaller than the panel 3i is received within the doorcasing as best seen in Fig. 4. Near the corners of the fire door 25, theplates 29, 32 and panel 3| are formedwith registering bores for bolts 33which secure the panel 3! and back plate 32 to the face plate 29.

The fire door hinge includes a round rod 38 extending along and welded,as at 39, to the lower side of the flange 28 at the top of the angleframe Zliand further includes an angle cleat 43 .extending-along theupper forward margin of the casing header 20. The flange 4| of saidcleat rests on said header 20 and is welded thereto,

the other flange 43 of said cleat occupying an upstanding position andtogether with said first flange 4| forming a reentrant angle in whichthe hinge rod 38 is revolubly received, as clearly shown in Fig. 4.

It is common practice to procure a boiler from one source and oilburning or other heating equipment of one type or another from adifierent source, and it is frequently more or less dif ficul-t to applythe selected equipment to the selected boiler, such difliculty residingchiefly in.

the trouble encountered in gaining access to the fire chamber for thepurpose of appropriately lining the same and/or locating therein partsof the equipment necessarily contained inside of the boiler structure. I

In the use of my invention, a boiler, having the features of doorwayconstruction, as shown in Fig. 2, may be installed without regard to thefiring equipment to be selected. With the boiler installed, the workmenequipping it with fuel burning apparatus may have convenient access tothe fire chamber through the relatively large doorwayleading thereinto,the door 25 and the ledge 23 being easily bodily removable from the doorcasing. After locating "any bulky part of the firing apparatus withinthe fire chamber 12 and applying any suitable lining to said chambersuch, for example, as a ceramic facing 44 (Fig. 4) and insulating sheath45, the doorway rod 38 into the angle of the cleat lll, normally remainsclosed by gravity, said door being readily removable from the casing byreversing the simple process of its application. Always selfclosing bygravity, said door may be easily opened from without the boiler, byhand, or from within the boiler by pressure exceeding that of the outeratmosphere. Under conditions wherein suction is created within theboiler, the fire door 25 is drawn snugly against the door casing, theasbestos panel 3| effectively gasketing-the door at the forward edges ofthe header 26, stiles 2| and ledge 23. In this connection, it is to benoted that the hinge member 38, although held against forward movementby the flange 43 'of' cleat 40, is free to slide rearwardly on theflange 4| of said cleat. This permissible relative movement between thehinge members allows the door to become freely seated against the edgesof the door casing. I

From the foregoing-it will be understood that my improved boilerconstruction readily lends itself to convenient and effectiveassociation with such firing equipment as-may b selected for use inconnection therewith;

, Changes in the specific form'of my "invention, as hereindis'closechmaybe made within the scope of whatis claimed without departing from thespirit'of my invention.

Having described" my-invention, what I claim as new-and desire toprotect by LettersPatent is:

. 1. .In a 'heater' having an upright doorway therein, a casingtherefon'isa'id doorway opening through the casing into the combustionchamber of the heater and afiording unobstructed access thereto from topto bottom of said doorway, said casing including a heater member and twostile members, and upper and lower doorway closures cooperating with theupper and lower portions of said casing, a separate platelike dividerfor disposition crosswise of the doorway, said divider being adapted toserve as a casing member common to said upperand lower closures, meanson the casing for removably supporting said divider, said meanscomprising a pair of horizontally disposed guides, one on each stile,the guides being open at their outer extremities for the reception ofthe end portions of said divider upon its edgewise application to saidguides, inner stops on the guides, the outer edges of the stiles slopingoutwardly and downwardly from the header, means for hinging the upperclosure at the top thereof to said header for swinging'about an axisparallel with said header, said upper closure being self-closed in aninclined position bearing by gravity against the outer edges of saidheader and stiles and also against the outer edge of said divider in itsapplied position, such engagement of said closure with said dividerserving to hold the latter in place in said guides and against saidstops, the lower doorway closure being removable from the casing, theremoval of said lower closure and of said divider and the opening ofsaid upper doorway closure giving unobstructed access to the combustionchamber throughout the entire height of the doorway.

2. In a heater having an upright doorway therein, a casing therefor,said doorway opening through the easing into the combustion chamber ofthe heater and affording unobstructed access thereto from top to bottomof said doorway, said c'asingincluding a header member and .two stilemembers, and upper and lower doorway closures cooperating with the upperand lower portions of said casing, a. separate plate-like divider fordisposition crosswise of the doorway, said divider being adapted'toserve as a casing member common to said upper and lower closures, meanson the casing for removablysupporting said divider, said meanscomprising a pair of guides, one on each stile, each guide having aninner stop thereon, the outer edges of the stiles sloping outwardly anddownward y from the header, means for hinging the upper closure at thetop thereof to said header for swinging movement relative thereto, saidupper closure being self-'closed in an inclined position hearing bygravity against the outer edges of said header and stiles and alsoagainst the outer edge of said divider in its applied position, suchengagement of said closure with said divider serving to hold the latterin place relative to said guides and stops, the lower doorway closurebeing removable from the casing, the removal of said lower closure andof said divider and the opening of said upperdoorway closure givingunobstructed access tothe combustion chamber throughout the entireheight of the doorway.

3. In a heater, a wall structure forming acombustion chamber and a basefor supporting the same'in an elevated position, said wall structurehaving a doorwaytherein extending downward tothe bottom thereof andopening into the combustion'chamb'er, said basehaving an openingincluding a headermember and two stile members, said doorway and saidcontinuing opening affording unobstructed access to the combustionchamber from the top of the former to the bottom of the latter, an upperclosure for the upper portion of the doorway, said closure being adaptedto be opened to clear said portion of said doorway, a removable lowerclosure for the lower portion of said doorway and the said continuingopening in said base, a separate casing divider for dispositioncrosswise of the doorway between the said upper and lower'portionsthereof, means on the casing for removably supporting said divider, saiddivider serving as a lower casing member for said upper portion of saiddoorway and as an upper casing member for the 7 lower portion thereof,said divider in its applied position cooperating with both of saidclosures, the removal of said lower closure and of said divider and theopening of said upper doorway closure giving unobstructed access to thecombustion chamber throughout the entire height of the doorway.

4. In a heater having an upright doorway therein, a casing therefor,said doorway opening through the casing into the combustion chamber ofthe heater and affording unobstructed access thereto from top to bottomof said doorway ,said casing including a header member and two stilemembers, and upper and lower doorway closures cooperating with the upperand lower portions of said casing, a separate platelike divider fordisposition crosswise of the doorway, said divider serving as a casingmember common to said upper and lower closures, means on the casing forremovably supporting said divider, said means comprising a pair ofhorizontally disposed guides, one on each stile, the guides being openat the front. for the reception of the end portions of said divider uponthe edgewise application of the divider to said guides, said upperclosure, when closed, being adapted to engage the forward edge of thedivider in the applied position thereof and hold the same in saidguides.

5. In a heater having an upright doorway therein, a casing therefor,said doorway opening through the casing into the combustion chamber ofthe heater and aifording unobstructed access thereto from top to bottomof said doorway, said casing including a header member and stilemembers, and upper and lower doorway closures cooperating with the upperand lower portions of said casing, said upper closure beingself-closing, a separate plate-Like divider for disposition crosswise ofthe doorway, said divider serving as a casing member common to saidupper and lower closures, the upper closure cooperating with the dividerin the applied position thereof to hold the same in place, and means onthe casing for removably supporting the divider.

6. In a heater having an upright doorway therein, a casing therefor,said doorway opening through the casing into the combustion chamber ofthe heater and affording unobstructed access thereto from top to bottomof said doorway, said casing including a header member and two stilemembers, and upper and lower doorway closures cooperating with the upperand lower portions of said casing, a separate plate-like divider fordisposition crosswise of the doorway, said divider serving as a casingmember common to said upper and lower closures, and means on the casingfor removably supporting the divider.

EARL P. BAKER

